Armature



Patented A ug. l5, I899.

H. G. REIST.

A R M A T U R E.

(Application filed June 20, 1898.)

2 SheetsSheet (No Model.) I

I I T R'. Henry Gvjlewla Qbkw' Q v N9; 630,930.. Patent ed Aug. I5, I899. H. s. REIST.

ARIIATUBE.

(Application mm June no; 1898.) I (No Model.) I I 2 sheets-sheet 2.

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.- To 'z lllwhom itmay concern:

[UNITED STATES PATENT OFFICE.

THE-GENERAL .ARMAT-URE,

. SPECIFICATION forming part of Letters PatentNb. 20,939, dated August 15,1599,

' Application filled June 20, 1898.. Serial Ho. 688.899 (No model.) v

Be it known'that I, HENRY G. REIST, a citi- "zen of the United States, residing at Schenectady, in the county of Schenectady, State of New York, have invented certain new and useful Improvements inArmatu res, (Case No.

-799,)' of which the following is a specification. My invention relates to the construction ofthe armatures of dynamo-electric machines.

Ithas for its object to improve these devices so-that'they may be properly ventilated, and

i this particularlyon the ends-f the armature, which have not heretofore been efficiently e cooled,"and to support the end connections in V 'such a way that they do not move one upon the other during rotation, thus eliminating the danger of injuring the insulation.

. Another object of the invention is to provide an improved form of space-block to he interposed between the end ring and the armature-iron, although it may of course be used in otherrelationsr- This form of these devices ,is provided with suitable retaining means for preventing displacement under centrifugal strain. .Usnally thismeans consists of logs engaging with the armetnredron or end rings,

' though other arrangements mightbe-used.

In the "annezred' drawingawhich show-an embodiment-oi ill invention Figure 1 is a section of apart or: anarmatnre, showing my improved eon'stroction. Fig. 2 is a side elevation of theqend ring and supportfor the end connections. Fig. Sis a perspective view of the improved spece-blook, and Fig. 4 is a detail showings modification.

In'Fig. LA is the shaft, and B is the arma-' tore spider. C .0 are groups of iron laminae forming theinagnetiecircuit of the armature,

' these in turn being separated by space-blocks D' D, which may. be. for instance, like those shown in my Patent No. 508,637. Between the end groups of laminations and the end ring H, I interpose the space-blocks D,whieh are of the form shown in Fig. 3 and will be more fully descrihed'in connection with that figure.

ing from the and ring H. To another project- 4 are placed, which screws (see Figs. 1 and 2) ad ust an insulating-ring G,.so as toalford a secure support for the end connections .e of the armature-coils.

This ringjs expanded by the lag-screws g 1 after it is put-in place,- so as tocompress the end connections-preferably, to such an extent that they become practicallya. rigid mass, and thus do not tend 'to move one upon another under changes of speed and consequentvariations of centrifugal force or under the magnetic drag of the stray field. Thus abrasion of insulation and danger to the machine is prevented;

The end ring H shown in section in Fig. is seen also in Fig.

are shown provided with bolt holes through which pass the bolts J of Fig. 1.

has its ends lapped-at G to allow for expansion.

At the other end of the armature, Fig. 1, is an end ring ll, substantially like the first; but as there are in the form shown no con nections between the coils at this end the flange h and ring G are omitted. 1

In Fig. 3 is shown the space-block D, employed between the end ring endthe armature-iron. lhis consists of a number ofiflat ribs d having stitiening-fianges d and com nested by striped to form a'whole.

block, designed, as shown in dotted lines in Fig. 1, toproject'under the armature-iron and secure the block against displacement by centrifugal strains.

In'Fig. 4. a portion of a bar-wound armature is shown. In this figure the toe d of'Fi g. 3 is replaced .by lugs 01 upon the back space-block.

Of course either construction could be used In this figure the lugs K K, which secure it to the armature-spider,

The ring G The parts at are of sour-seas thin as possible con Holes are tapped i of the Oil with anv t e of armature. At e 8' Fi e. 1 l nient' of the s ace-block nnder centrifu al 4 yr u 4 2:

ends, areshown the usual binding-wires securing the coils in'place. v

"What I claim as new, and desire to secure by Letters Z atent of the United States, is-

1 In an armature for a dynamo-electric machine, the combination, with the end connections, of airing snpporting the said end connections and pressing outwardly against them, and means for holding the rim in place? 2. In an armature for a dynamo-electric machine, the combination, with the end connections, of an expansible insulated supporting-ring, and means for expanding the ring.

3. In an armature fora dynamo-electric machine, the combination, with the end connections for the coils, of an insulated expan- Sible ring G, an end ring H having a flange, and screws passing through the flange and acting t'o'expand the ring so as to-secnre the end connections rigidly in place.

i. As a new article of manufacture, aspaces block between the armature-lamina of a d namo, locked against radial movement by an overlapping edge,- to prevent the displacestrain.

5. As a new articie of manufacture, a space block having separated ribs and connecting portions, and provided with'one or more lugs engaging the armature for preventing displacement of the space-block.

6. The combination with the armature-iron I of a dynamo, of, an end ring, a space-block between the ring and the armature-iron provided with radial spaces to pxomote ventilation, and an overlapping edge to prevent radiai displacement under centrifugal strain.

-7. The combination with the armature-iron of a dynamo, oi. an end ring, and aspace-block between the end ring and the armature-iron provided vithintegral means preventing its displacement by centrifugal strain.

In witness whereof I have'herennto set my hand this 17th (lay of June, 1898.

HENRY e. REIST.

Witnesses:

B. B. HULL C. L. HAYNES. 

